Evolution 9

Specifications

About this reference

Nagano Prefecture, where Spring Drive watches are manufactured, is home to a number of mountains rising over 3,000 meters. The countless rivers that flow from these mountains have, over many years, created a lush, natural environment. The Atera River carves out a deep ravine called the Atera Valley, known for its breathtaking beauty. Using the clear, emerald-green waters of the Atera River as a motif, the dial conjures the image of a stream so clear that one can see the bottom, as well as the rich, natural harmony of summertime. At the heart of this watch is the Spring Drive 5 Days Caliber 9RA2. This movement provides up to 120 hours (5 days) of power when fully wound, as well as an average accuracy of ±10 seconds per month, an astounding achievement for a watch powered by a mainspring. Exterior: Exterior: High-Intensity Titanium; Case back: See-through & Screw case back; Glass Material: Dual-curved sapphire crystal; Glass Coating: Anti-reflective coating on inner surface; Case size: Diameter 40.0mm Lug-to-lug 47.9mm Thickness 11.8mm; Band width: 22mm; Clasp type: Folding clasp with push button release; The perimeter of Band: 195mm. Movement: Caliber no.: 9RA2 Instructions; Movement Type: Spring Drive; Power reserve: Approx. 120 hours (5 days); Accuracy: ±10 seconds per month (±0.5 second per day). Functions: Water resistance: 10 bar; Magnetic resistance: 4,800 A/m; Weight: 112 g; Other details / Features: Screw-down crown Allergy-safe metal Power reserve indicator.